When driving behind a large vehicle at night, what should you do with your headlights?

When driving behind a large vehicle at night, dimming your headlights is essential for ensuring safe visibility for both you and the driver of the large vehicle. High beams can create significant glare, making it difficult for the driver in front to see, which can lead to dangerous situations. By using low beams, you reduce the glare and allow the driver of the large vehicle to maintain visibility without being blinded by your lights.

Using fog lights or leaving high beams on would hinder the large vehicle's driver's ability to see the road ahead. Turning off your headlights completely would also be unsafe, as it would eliminate your visibility entirely. Dimming your headlights strikes the right balance, allowing for safe driving conditions while respecting the needs of the vehicle in front of you.